Cheapest one-way flights from Philadelphia to Madrid in March from $306

AirHint found the following cheapest one-way flights from Philadelphia (PHL) to Madrid (MAD) in March 2026 (see full year).

One-Way flights

21 Mar Frontier Airlines
06 Mar Frontier Airlines
28 Mar Aer Lingus
15 Mar Lufthansa
27 Mar TAP
15 Mar American Airlines direct
21 Mar British Airways direct
28 Mar Finnair direct
06 Mar Finnair direct
27 Mar Finnair direct

Also check the deals for return flights from Philadelphia to Madrid in March.

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